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The gauge pressure in each of the four tires of an automobile is240 kPa. If each tire has a "foot-print" of 200 cm2, estimate the mass of the car.
A block of mass m = 2.0 kg is dropped from height h = 90 cm onto a spring of spring constant k = 1960 N/m. Find the maximum distance the spring is compressed
If the relativistic kinetic energy of a particle is 9 times its rest energy, at what fraction of the speed of light must the particle be travelling
A gardener opens a hose and water is ejected horizontally at the speed of 6m/s. The diameter of the hose is 2cm and the density of water is 1000kg/m^3.
A thin, uniform, metal bar, 2m long and weighing 90N , is hanging vertically from the ceiling by a frictionless pivot. Find the angular speed of the bar just after the collision
An iron tower in is 340 meters tall on a cold day (=-8l4 degrees Celsius). What is the hight of the tower on a hot day whe the tempeture is 32.4 degrees Celsius
A resonant circuit in a radio receiver is tuned to a certain station when the inductor has a value of 1.00 µH and the capacitor has a value of 1.90 pF. Find the frequency of the radio station
How fast should the platform move, v_p, for the person to detect a beat frequency of 7.00 Hz ? Take the speed of sound to be 344 m/s. Express your answer numerically in meters per second.
What is the sound level of a sound whose intensity is 6.5 × 10-8 W/m2, What is the intensity of a sound whose sound level is 30 dB
Three point charges -q,-q, and 2q occupy the verices of an equilateral triangleof side a. Find the electric field at the center of the triangle
The venturi flowmeter shown in the figure is used to measure the flow rate of water in a solar collector system. The flowmeter is inserted in a pipe with diameter 1.9 {rm cm}; at the venturi of flowmeter the diameter is reduced to 0.64 {rm cm}. Th..
The ideal gas law relates the temperature, pressure and volume of an ideal gas. How many molecules of gas are inside the balloon
Mammals that depend on being able to run fast have slender lower legs with flesh and muscle concentrated high close to the body. explain why this distribution of mass is advantageous
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